Aligning Decimals for Sums and Differences
Explore how the positions of decimal points in numbers affect their sums and differences.
Tâche 1
Putting It All Together
Answer these open ended questions on your own or with others to form deeper math connections.
Tâche 2
What do you notice about the positions of the decimals in a sum or difference?
Tâche 3
In finding , Alex wrote the following calculation: Why would Alex write extra zeros?